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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






2. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






3. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






4. Provide nourishment for the developing sperm






5. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






6. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






7. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






8. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






9. 1-2 days






10. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






11. To remove/separate testicles from animal's body before animal reaches puberty






12. Failure to have one testis (gonad) to descend






13. Why does estrus happen before ovulation?






14. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






15. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






16. Luteolysis happens because of the ____________ hormone






17. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






18. When are steers and heifers weaned from bottle feeding?






19. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






20. Front feet and head first. (except for hogs and dogs)






21. (male) pushes the testes outward toward the legs for a cool-down off of the body






22. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






23. ~60 days before calving






24. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






25. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






26. 30 hours after estrus begins






27. Start of the reproductive tract for the female. located outside of the body






28. Sperm production






29. 283 days






30. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






31. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






32. Check feet and legs - look for masculine traits in build such as crest and muscling






33. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






34. Depository for semen during insemination. where urine leaves the body






35. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






36. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






37. 19-23 (21) days






38. Days which have increasing daylight hours

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39. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






40. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






41. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






42. Contains and regulates the temp of the testes for sperm production






43. Milk ~305 days - dry 60 days prior to calving






44. Scar tissue plugs up chambers of udder






45. Urinary calculi.






46. Help to signal hormone levels which we need both in the brain right next to each other.






47. 26 hours after estrus begins






48. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






49. Produce testosterone. located between the seminiferous tubules






50. Why Dairy calves are fed powdered milk.